X0306 4 2018-10-04 0 0000876343 BIOTIME INC BTX 0001698237 Patton Stephana Eilene 1010 ATLANTIC AVENUE, SUITE 102 ALAMEDA CA 94501 0 1 0 0 General Counsel & Secretary Common Shares, no par value 2018-10-04 4 M 0 13750 0.00 A 21250 D Common Shares, no par value 2018-10-04 4 F 0 4755 2.22 D 16495 D Restricted Stock Units 0.00 2018-10-04 4 M 0 13750 0.00 D Common Shares 13750 41250 D Shares earned by the Reporting Person as a result of the vesting of Restrictive Stock Units ("RSUs") granted to the Reporting Person on May 24, 2018. Does not include RSUs payable in shares of the Issuer's common stock that have not vested as of the date of this Report and shares that may be acquired upon the exercise of certain stock options. Securities withheld for tax purposes exempt under Rule 16(b)-3 in connection with the vesting of 13,750 RSUs, the grant of which was previously reported on a Form 8-K. 25% of the RSUs granted on May 24, 2018 vested on October 4, 2018, then the remaining 75% of the RSUs shall vest based on the sole determination by the Board of Directors that BioTime has achieved certain milestones, subject to the continuing employment of the Reporting Person on each vesting date. Shares of the Issuer's common stock will be delivered to the Reporting Person upon vesting. /s/Stephana E. Patton 2018-10-08